Is the lack of communication with a former friend after a childhood dispute considered a boycott that warrants sin and the non-acceptance of prayers for forty days? And must I try to communicate with her again? And what is the definition of boycott in Islam?

The rulings on friendship between Muslim women are the same as the general rights of brotherhood, including the impermissibility of abandoning one another for more than three nights, based on the Prophet's (peace and blessings be upon him) saying: "It is not lawful for a Muslim to abandon his brother for more than three days." If a Muslim woman initiates communication after a problem, she has fulfilled her duty and the sin of abandonment is lifted from her, even if the other party turns away. Neglecting fraternal rights before puberty is not blameworthy. It is not obligatory to repeat attempts at communication after the first initiative, but it is commendable for loyalty and good companionship. However, if there was negligence or harm, forgiveness must be sought. There is no sound evidence that the prayer of one who abandons another is not accepted for forty days. The prohibited abandonment is turning away after establishing brotherhood and aversion upon meeting. It is neglecting what must be attended to and separating from a person physically, verbally, or emotionally. Formal conversation is sufficient to negate abandonment.